Curved bolt lock



May 18,1926. Y 1,584,950

C. W. LANPHERE CURVED BOLT LOCK Filed Oct. 18, 1924 4 Sheets-Sheet 1 /9' FIGJ f,- 1 s .'11 1 k *n Y 34 E l@ INVENTOR 23 22 37 3g, 35' 4l cLwE w. LANPHERE 95 82 35 1 BY l ATTORNEYS May 1s 192e. 1,584,950

C. W. LANPHEREK A GURVED BOLT LOCK Filed Oct. 18, 1924 4 Sheets-Sheet 2 F'IG.

FIC@

F'IGJQ INVENTOR yC.L\\/E w. LANP'HERE 25 l ATroRNl-:Ys

C. W. LANPHERE CUHVED BOLT LOCK May 18 1926. 1,584,950

Filed 0011 1e, 19221 4 sheets-sheet s F1611 Y F1911.

FIGJB.

ATTORNEYS May 18 1926. 1,584,950

- c. w. LANPHl-:RE

CURVED BOLT 1.00Kl

Filed Oct. 18, 1924 4 Sheets-Sheet 4.

A l A n l 27 l NvENToR l/lJ M8 BCLIVE w` LANPHERE @w Y/WWW" ATroRNEYS locking? mechanism? Patented May 18, 1926i OLIVE W. Lauri-1ERE, or NEW Yoan, N. Y.

cURvEn BOLT LOCK.

applicati@ mea october" 1a',v 192e. serial No. 744,327.

The present inventionl relates to improve mentsupon the lock shown in my copending applications Serial NumberI 563,645, filed May 25, 1922; Serial Number 6l7,235,` tiled February@ 1923; and Serial Number 671,- 820, iiled October 30, 1923 'The type'ot lock disclosed inthe attorementioned cases is an automatic and manual lockh'aving an arcuate bolt which is adapted to be projected into interlocking' engagement with af keeper so that the'lockis not capable ot being jimmied.v i

' A'iiobject ot my invention is' to provide a lock ot the jimmy-prooic type' which' is ot simple design and `which hasitsvv operating parts arranged in compact form.' i

A' turth'er object ot my invention is to provide a lock ot the arcuate bolt type hav-` ing relatively teW operating parts; but which possesses all of the essential elements of standard locks.

A' further object ot' myl invent-ion is to pro-vide a lock ot the arcuate bolt type which is rugged in construction and easily operated.

Astill further'V object of my invention is to provide a lock of the arcuate bolt type in which the bolt is pivotallymounted in such a manner that it may be projected or retracted With the minimum resistance.

still further object-ot my invention is to provide a lock having an arcuate bolt and in which the mechanism for operating the belt is disposed 'Within the path'describedby thebolt. y

A still further object of my, invention is to provide a lock ot' the arcuatebolt type embodying a latch,` Which lmay be conven icntly operated by one hand.' A

Otherl objects` of my'invention will appear as the 'description' is read.

The present'inventionrelates to au lock having an arcuate boltvvhi'ch is automat-L cally'or manually projected into interlocking engagement 'with'A a' keeper. T he bolt moves in an larcuate path?, first passing through an opening in thel tace Eof ltheflock, then,-tlnoughy an o'peninginV the'v keeperythfen in af curved path throughthe" keeper emerging thrimgh an# opening 'in another p'artfthereofgthen into anotheropen'ing in the Ytace of the -lockI The holt Y is :locked in this` 'position 'so Y`that i it can' ing-the' Because ot the fact that the' bolt twice passes acros'sthe gap between the door and the jamb,l the door' is secured' against movementiat two points spaced a distance'apart, thus the bolt furnishes in effect two locking bolts' for preventing swinging movementV ot' the door. At the same time, bectnisel the bolt engages the' keeper in' a curved path,'it is impossible to separate the bolt tromthe keeper by the insertion of a jimmy orjother tool between the door and the jamb, It' will thus bebseenV that theL lock constructed. in accordance with my invention can not be jimmied and that it eitectively interlocks the door and the jamb` together.

The above typeo'il lock isdisclosed by me in the several prior copending' applications referred to heretofore. The present invention contemplates improvements upon the the locks disclosed in such'applications, although fundamentally the'principles ot operation are essentially the same. The improved i'eatures deal primarilyivith the sim pl'iiication ot the operating mechanism, a rearrangement ot' the parts soV as to obtain a more compact construct-ion, the balancing of theoperating parts so as'fto obtain ease of operation, andthe provision of means tor permitting operation by one hand. At the Sametime the rugged construction ot the lock has been preserved lit' not improved upon,`

Specifically, the improved features are the positioning oil the bolt controlling mecha? nismvvithin the circular path described by the bolt; the mounting oft' the` bolt upon a Wall ot thelock casing so that it is free tomove .in either' direction with a` minimum amount of resistance; thesimplication ot the lockingtumbler Vand thefreleaser mecha?V nism whereby the .number 'ot operating parts arey reduced and their operation` rendered more certa-iny and vwith lessl diliifculty; the provision of mechanism for an arcuate bolt'and a latch 'Vivhich permits single hand operation. Other l features ivhich have been incorporatedin tlie pres' lock v vill-V ap.- pear .Y from r thefdetailed" de( zription;` i Y The. i'i'i'vent-onfWill more ullynndersto 'dV by iet rrinff' tofv the accompanying drawings fwn; 1 j

Fi "L" lis a' 'plan'"View`y of the lock" n fr' fthe bolt in 'its retracted pOSOIl'iCVBf bei? ing removed, the keeper` with its housing and bolt in projected position being shown in dotted outline.

Fig. 2 is a sectional view on line )1I-II, Fig. 1.

Fig. 3 is a plan view of the face plate of the lock.

Fig. 1 is a detail view showing the position of the tumbler for locking the bolt in its projected position and about to be engaged by the spindle arm to be remover from such position prior to the retraction of the bolt.

Fig. 5 is a view partly in'section of the lock in position within a door.

Fig. 6 is a detail view of the interior escutclieon bolt spindle catch.

Fig. 7 is a view taken substantially on line Tlli-elfl1 in Fig. 1 but with the rever of the casing in place to show a latch locking mechanism. Y

Fig. t is a side view. on a re'lured scale, of the keeper or guard.

F ig. 9 is a front view of the keeper.

Fig. 10 is a View ta :en on line X-X in Fig. 9.

Fig. 11 is a rievf of the inner side of the cover plate of the lock casing.

Fig. 12 is an edge view of the plate shown in Fig. 11.

Fig. 12L is a fragn'ientary view of a door showing the relative position of the key cylinder with respect to the jamb.

F ig. 13 shows the mechanism for rendering the bolt inoperative when applied to a rim lock.

Fig, 1-1 is an enlarged section taken on line XIV--IV in Fig. 13.

Fig. 15 shows a modified form of the operative parts of the lock including a spiral spring.

Fig. 16 is a view taken on line XVIhlV in Fig. 15, showing a modified locking pawl to receive an end of a spiral spring.

Fig. 17 is a modified lock structure embodying' my invention and showing means associated with the key cylinder for retracting the latch.

Fig. 18 is a fragmentary view of a cover plate for the lock shown in Fig. 1T.

Fig. 19 is a view of the under side of the cover plate shown in Fig. 18.

Fig. 2O a super cover plate to receive a lock barrel.

Fig. Q1 is a sectional view of the. operative p: ts of a lock as shown 1n Fig. 1T and illustrates the operative relation between the bolt and the key barrel. and

Fig. 22 is a view taken substantially on line XXII-XXH in 17.

An embodiment of the present invention as shown in the preferred form is applied to a lock of the inortise type, although equally useful and4 practical when appliedto the rim type 1001i.

A lock embodying the invention may include a casing or housing 15 comprised of a bottom wall 1G and side walls 17, 18, 19 and 21. The side wall 17 is extended at each side from the casing to provide a faeing 22 and a face plate 23 may be provided and secured to the facing by screws 21. A cover plate 25 may'colnplete the housing and may be fastened in position by suitable machine screws or tap bolts screwed into tapped holes 26.

My lock mechanism may eompr`-e an arcnate bolt 2T having a tongue integral with an extended rear portion or tail piece 25), a stem 31 and a lin or radius arm 32. The arm may be of fan shape having its broader portion integral with or suitably fastened to the extended tail 2) of the tongue. ll`he opposite smaller end of the lin or arm 32 mayv terminate in a hub 33 movable in a raceway or annular groove 3/1 formed in the bottom wall 16 about a bearing aperture 35 in which a stub shaft 3G, termed a spindle, may be disposed for rotation. The shaft 36 may be provided with a shoulder 3T for disposition in a counterbore of the aperture 35. The arcuate bolt 2T is rotatable independently about the shaft 36 and may be oscillated by a manipulation ot' a knol 37 (see Fig. 5) attached to the shaft in a manner to be later described. Means for anti-'lirictionally retaining the arcuate bolt in its operative position may include a retainer ring 38 secured to the casing by screws 39 in threaded apertures adjacent the perimeter ot the aperture 35. The ring er washer .53S is of a proper dimension to overlap the hub 533 and a circumferential ridgeI -1-1 may be. provided upon the hub to cniclosev the ring. rThe end of the stub shaft 3G which projects into the casing is preferably shaped to rectangular form for insertion into a centrally disposed aperture in a bolt actuating member or cam plate 'l--l having,r a cani rise 15. and the hub 38 of the bolt may have a lug 415. as shown in Fig. 1, or a recess as shown in Fig. -1. for the purpose to be presently described. rflic pla te 11- may be secured to the shaft 36 by screws 1T. .it spiral spring 4S has one end positioned in a slot --f) in die end 42 of the stub shaft 234.3 and the opposite end in a slot 51 provided in an extended portion which also coustitutes a contact boss and carried on thtl arm of the arcuate bolt 2T. The portion serves to engage with a stop lu`r 50 on the cani disk to limit the movement thereof. The bolt is constantly urged to its projected position by reason of a spring 53 disposed upon the stem 31 between a plate 5l secured to the stem and a ring 55 in contact with a slotted stop 56 secured to the bottom wall of the casing. The stem 31 may be removably attached at one end to a shoulder of the tongue screws ,5T and the opposite end ot the stem may lit into ay recess 3l in the tree end oit they tail piece 29.

When kthe bolt is in its retracted position, the spring Will be under compression and the bolt. is held. imposition in opposition to the action of` the spring by a reciprocablc member which serves as a bolt. detent and releaser. One end of said membervis provided with va lip 59 adapted to engage with a projection 6l extending perpendicular to the surface of the arm or' the boltand secured thereto. 'The projection is provided nitha notch Zinvvhich the lip may engage should the operator tail to fully retract the b oltivhen opening the door.. The notch 62 tlieret'ore assures the retention of the bolt under.normalconditions as-the door can not be opened until thebolt is retractedL 'tar enough tor thelip to-engage the notch (52.

The opposite endrot'.theretainer member' terminates inv a beveled latch piece 63 positioned in an aperture tie in the plates and 23. The latch piece is arranged to enwith the surta-ceci' a keeper or guard 65 secured to the jambv ot a doorway. The keeper is indicated in dotted lines in Fig. l. then a door with the present lock applied is moved to bring .the latch piece 63 into engagement with vthe keeper, thev latch piece and consequently the retainer member 58 Will be moved in a direction to remove the lip 59 from engagement Withlthe projection 6l andnotch 62 and release the bolt for projection.

rlhe retainer member may be provided with a. body portion (i6 slidable on suitable tracks 6G (Fig. 5)- and may be also provided with an elongated slot 67 (Fig. l). an abutment (SS is proifided to projectinto the slot when the retainer or releaser member is in its operative position. The abutment may be integral with the casing and serves to engage one end ot a spring 69 positioned in the slot between an end 7l thereof andthe abut-ment. The spring 69 may act to normally move the latch outwardly to an operative position with respect to the guard 65. The releaser or retainer member is, therefore, operable to hold the bolt in its retracted position and to be automatically actuated to release the bolt so that the latter may be projected..

By reason ofthe spring 48, the shaft 36 is automatically urged to a normal position after being partially rotated to vmove the bolt 27 by engagement ot the cam diskee therewith.` l

lllhen the bolt 27 is in its projected position, av locking paivl T2, pivoted on a pin or post '73'. integral with the casing, engages the lun' or shoulder 46, which may be a recess Qif desired, properly positioned on the. peripheryot ythe hub 33 opt-the bolt 2'?.

`The locking vmeansinclinles-` a notch 7e-in4 the-,leekiegipaalt0 .recente L:t1- 1e @lue-f 46a-the;

paivlbeing normally urged toward the lug by al bowtorsionspring 75 mounted on an anchor and king post 76 and 77, respectively, secured to the bottom Wall ot the casing.

f llvhcn the retainer or releaser member is actuated bythe guard 65 and the bolt takes its projected position, the paivl engages With the lugV or recess 46 on the hub 38 ot the bolt and thus locks the bolt in its projected position.

A. release ot' the bolt is, however, readily etl'ected when the same is to be retracted either by a key or by. the rotation of the cam disk ett through the agency ot the knob 37. The knob is associated with the cam disk 11i-'lf (see Fig. 5) by means comprising a threaded shank or spindle 79 having a 'squared portion 8l to enter a rectangular .rocket 82 in the stub shaft 36. The knob mayha v7e a 'threaded hub 83 tor threaded connection to the shank at different positions along its length, and a set screwl Se may be provided to secure the knob to the shank. rin adjustment of the knob in accordance with the variation in the thickness of different doors may thus be attained. The set screw Sein the shank may beemployed tor securing this adjustment. The pin 146 and series ot apertures M7 assist in attaining this ifrfljustn'ient.

The knob, cam plate and shaft are movable a unit manually andunder the action ot-the spiral springl 48. When the bolt is projected, the cam plate takes a position as shown in Fig. d and the cam rise 45 on the plate is in position to engage with the locking paivl 72 as the knob is manipulated to retract tho bolt. The operation being first to move the cam rise to raise the locking pawl and then into engagement ivi-th an extension vTO integral with the bolt to carry the same to position -ivithin the casing Where it is retained by reason of the retainer nie-mber 58. `When the bolt is retracted the ends and 86 thereof are disposed substantially flush with the surface ot the face plate 23, thus giving a smooth and finished appearance to the visible portion of the lock.

It is often found desirable to so construct the lock that an automatic actuation ot a latch bar 102 may be had by an additional retractive movement of the bolt either through a key or the knob associated with means to be later described. lt may be desirable, however, toeilect an operation or" the lock by means ot the key only to cause the retraction o t .latch bar 192, stop neans being provided to prevent the latch bar operation When the lock is operated by the knob-3T. The stop means may comprise an extensionl 5 0EL of the lug 50, as shown in dotted `lines inl Fig-1.

When vthesaid.extension.is provided the movement of the. cain. plate .et j necessary to 'llO bolt.r As Ashovvn in dottedlineshin Fig. 11,

tlieQkey slot 13I is' `i1orinally positioned at an angle 'tothe vertical. This ariar"i'ge,i`i ient of the 'slotl ladaptsV the lock to "a convenient actuation by a :infoi'fenient of 'the Wrist which is important in 'a lockoithepresent type in which the bolt hasv a relatively long move# ment' y y v y Although a d ofor may beopenedv bya manipulation of the knobs 37 and 119 or ythe knob 118 and a. kefy, inechai'ii''sin is provided s o that a door may be openeldfby an actuationjo'i either a key or the knob 37 alone. Such mechanism inay 'includean extension isola integral with 'the end 1030i the nach 102. The e'xtensionvmay 'include a linger 131a Vnormally in engagement ivith Aa long afi-1n 132i" oi a lever 129? pivotedto the bots tom Wall of the casing and having a shorter ari'n 133'PL associated'vith the bolt 27. `iilhen' the bolt is actuated lforYretraction by either the key Yor the 'knobv 37,' it 'niay be 'moved until the exposed end oi the bolt 2Tl projects through indenture 135a andint'o the aperture Y123fof the keeper 65.` This move mentor1 the bolt servesto eii'ect a'cooperative movement 'of lug 1733451 on 'the ltail piece 29 and the lever arm 133a anda consequent retraetion ofthe latch. Itis necessary to only permit a slight movement 4of the' end of the tail piece intfo the' keeper, because a very slight movement of 'the' door rvvhen opened ivill cau'setl'ieend of the ,latchy to be positioned v'to engage ywith' the face of the keeper and i'be lheld retracted during the opening oi' tlie'l'door. Forthe purpose oi' permitting :a nviove'inenft 'of the Adoor and 'at thel saine time allowing th'ejeri'ld ofthe'bo'lt to 4project sufli'ciently to `keep 'the latch re@ tracted. an inclinedindenture 136a is provided at onefside oi the aperture V123 over yivl'iiclivtl'ie reaie'nd' lof the bolt may slide but still be sfuiicient'ly projected to'hold the la'tcli retracted until v'as aboveV stated tlie end ofthe latch "engages `withv the Itace oit' the keeper as the' doorI isf'opened. y Then the indenture vserves to push tiliebolt back into the casing, rende'rin'gv its ends substan'tiallylusli with the face of the'casing and allowing the' doorfto b'e vswung clear of the j'amb. a. y d

It may be'. vf'o'i'lnd desirable tolock the door by means of thelteli 'ban For this purpose al slide yrod '1 4`Oa'is'-f provided and' movably disposed"between the Vguide 'pieces 1111a in:

te'gral With the Wall 16. (Fig. 7 )L The' 'slide bafr may extend through a slot 142" in the Wall 16 :and may terminate at one end in a vcross piece 1113a connected by a spacer member 114Ca movable in a slot 145@ in the escutcheon plate 1416n and secured to a. finger piece 1472*. The opposite end 118a of the slide bar 142L may by means of the linger piece be moved into and out from a notch 149a in the lever 121 of the split latch barrel which functions. to actuatethe latch from the outside when the knob 118 'is 'turnedg By ,virtue-fof the slide bar 140a is possible to lock the ydoor without 'actuating the `bolt 2 7,v or both the bolt and latch may be ein'ployedland a'double lock thus provided. The inside knob is always freeto retract the latch. y

An important feature 'of the present lock i's fthe Vnovel means for locking the 'key cylinde'r 127 tothe casing. As illustrated in Figs. 11 and 12., the keycylinder is provided with oppositely disposed vflat surfaces 131 and 132and the plate 25"in which is screwed the 'key cylinder, is providedjwith bosses 133 and 134. The bosses are 'tapped tof receive slet screws 135 Awhich may be linoved into engagement `with the said surfaces and thus prevent "rotation "of the cylinder 12.7 and its removal which pern'iits one to engage 4the bolt mechanism by means oi' their fingers.

This construction greatly lreduc'esthe possibilit'y of any one turning the cylinder by applying a wrench such as a Stillson, to the. end oi the cylinder which progects `from the outside of the-door. Heretoiore', the cylinder liasrbeen held by reasonoi set screuv Whiehl engaged a notch or slot in the'cylindei' in line ivith its center.`r `iii/Thenl i'o'rce Wals applied the cylinder lcouidbe remo-ved, len

the present construction the'notches are offset with respect to the center oi the cylinder f and a direct opposing `force is applied making` it 'practically impossible to turn the cylinder.

ln addition to the above means for se? curing the cylinder againstrotation, "a protube'rance 141 is positioned on the 'escut'c'heon plate adjacent to ythe projecting portion oi the cylinder (see Fig. yThis protuberance 'and the closeness of the key cylinder to the jai'nb serve to' prevent the usevoi a Stillson Wrench to get hold oi the key cylf inder. v

In many instances it is desirableto provide means whereby a person witl'iin aj rooin may render la. lock inoperative `lfiointhe outside 'even though the proper key be employed. For this purpose, provide a slide latch as shown in Figs. 5 and 6; This latch may c'oinprise a reciproca-ble finger le() dis*` posed in 'a suitable recessl adjacent'an escutcheon plate 1111 which may be provided With a slot`142 to receive a separator piece 1418 connected to the. linger 140 anda push lplate Pillinovable upon the out'ersiiriace oi" thel escutcheon plate'. The

Within the door iso lill) ifil) end of the inger 1110 engaging a bolt cross pin letti is beveled at to provide for its automatic retraction when the bolt is projected should it be pushed into loci-:ing position when the bolt is retracted. rIhis assures a full projection of the bolt. A spring 1:15 ma)v be provided to hold the parts in trictional engagement with the plate rtl. ly manipulation of the push plate, the linger may be moved in the path ot' the cross pin 146 disposed in one of several holes 1st? extending transversely through the threaded shank or shaft 'T9 of the knob Si". thus preventing a rotation of the linob and the actuation of the bolt. It will be understood that it the knob is held trom turning, the extended portion 52 on the bolt vvill engage with the stop lug 50 and the bolt will be held from movement. The holes 14'." may be so arranged in the shank 79 as to permit the proper disposition ot' the pin 1&6 with relation to the. reciproeable finger 1-l0 in accordance with the variation in the thickness ot the door to which the lock is applied.

Although the slide latch is shown in the present illustration as positioned vertically, the preferable arrangement ot such a latch is horizontal, the movement beingtransversely of the door.

In the case ot a rim lock, I may also provide means to render the bolt inoperative. As shown in Figs. 13 and 1&1, such means may comprise a push pin movabley in a suitable bearing 156 in a Wall of the casing ot the lock. The push pin 155 may be so disposed that an end 157 thereof may be projected into the path of movement of the bolt 27 of the lock. Thus When the bolt is projected the end 157 may, as illustrated, be moved from a recess 158 in the wall of the casing and serve as a stop to prevent a retraction of the bolt either by a key or the knob. It will be understood that the push pin may vary in construction and may be disposed to engage with any portion of the bolt as good practice may require. The present push pin is provided With av tension member 159 which serves to frictionally re` tain the push pin in a given position.

Although the present preferred embodiment of the invention shovvs a helical spring 53 upon the stem to throw the bolt, added impetus may be given the bolt by the spiral spring 4S. Then the spiral spring is used for the above purpose, the locking paWl 72 may, as shown in Figs. 15 and 16, be provided With a notch 148 and an end 148 ot the spiral spring 48 may be attached to the pivot post 73 ot' the pawl. The opposite end of the spring 48 may be attached to the shaft 36 in the same manner as shovvn in Fig. 1. IVith this construction, the stop lug 50 is normallyT maintained against the extended portion 52 on the bolt and the potential energy of the spring 4S serves to throw the bolt when the same is released by the means hereinbetore described.

'f It will be noted that the releaser and retainer member 58 is so constructed that in the event that the same should be in its forvvard position vvhen the bolt is being retracted, that the latter will effect the automatic retraction ont the releaser. This is accomplished by a cooperation betvveen the beveled` or chamtered edge or' the member 58 and the rounded end 166 of the projection 'To carried by the radius arm or' the bolt. ."r reti-active movement of the bolt results in an engagement between the projection 7() and if" the edge 165 of the member 5S, causing the latter to move inwardly, thus pern'iitting the lip 59 to overlap the projection (51 and the notch 62 and permit the member to talge its operative position to lock the bolt in its retracted position.

Another feature ot my invention resides in the arrangement ot' the openings of the guard t'or the bolt (as shown in Fig. 9) so as to assure the movement ot the bolt therethrough Without friction. In order to secure this end, the bolt openings 123 and 124 in the guard have dilerent clearances Ylor the bolt on thei side adjacent the inside ot' the door to Which the lock may be hastened than the clearance between the guard opening and the opening 10a for the latch. Thus when the latch engages the guard, the bolt has a slight clearance, and as a result ot such clearance the bolt may be projected through the guard Without any possible friction.

In locks of the arc bolt type it has been found difiicult and according to many such constructions impractical to properly position the key cylinder with respect to the otl`- set on the jamb of the door. For example. in some locks the key cylinder is so disposed as to necessitate a recess in the ledge ot the jamb, said ledge serving as a door stop.

My lock is, however, constructed with a viev-J to meeting the conditions universal in carpentry and as shown in Fig. 12l ot the drawing the key cylinder 128 is so disposed as to be located a proper distance avvay .troni the ledge 12Sl1 of a jamb 129, the knob 3T as Well as other knobs are in consequent-1 l located at a suitable distance from the janih giving room for the hand grip when the door is opened. An arc bolt loclr with a lrejv disposed a desirable distance trom the edge ot the door is novel and of great utility.

The construction shown provides in addition to means for manual retraction, means for manual projection of the arc bolt should the projection springs become broken or dispensed with, if desired. A modification ot the above is shown in Figs. 1T to 21 and ma;v include the usual casing having a cover plate 25. The bolt 2T is mounted to be oscillated on the stub shat't 3G shown in Fig. 2, the

lill) several operative parts associated therewith being the same as shown in Fig. 2 and may include the knob 87. rEhe bolt being; man-- ually operated, the stein and the helical spring are dispensed with.

The latch mechanism may be ot any suitable construction, and as shown comprises a latch bar 102 having an end piece 108 projeeting from a face plate 172. The latch bar may be similar in construction to the one shown in 1 and a coil spring` 17B mounted thereon may engage with the end 108 and guide lugs 174 to normally urge the end piece outwardly. The latch mechanism may include a barrel consisting et two parts 175 and 176 inserted in a sleeve 180 (see Fig. 22). The barrel members may be provided with angular apertures to receive the shanks 177 and 178 ont knobs at opposite sides of the door and opposing ends of the shanks may be attached together by a couplerA meinber in the usual manner. rThe members 175 and 17 6 are provided with lever arms 181 and 1 2 respectively, both o1 whieh are disposed with their ends engaged with a rocker piece 188 which embraces the two piece barrel ot the latch. The rocker piece has a lip 18d engaged with a cross piece 185 secured to an end of the latch bar 102 and an arm 186 which is engaged by a spring 187, a pivot lug,l 188 integral with the casing' serving as a tulcrum for the rocker piece 183.

Each et the parts 175 and 176, which consti the barrel et the latch, may be oseillated ly a manipulation et the respective knobs to etect an independent actuation oit the latch bar'102.

llfhen desirable, means may be employed to render the latch in operative from the enter side or" the door. Such means may comprise push buttons 191 and 192 movable in apertures in the :tace plate et the lock. The button 192 may comprise an extension 193 having' an oiiset end 1911 to engage with a notch 195 in the lever arm 181 o't the barrel part 175. l

i movement ot tne end ot the extension 198 into or out 'from the notch 125 will render it possible or impossible to actu-mc the latch by a movement ot the shank 5r movement o'i the exten sion into the notch may be caused by a direct thi-ast ugon the push button 192 and areversa-l may be eiiected by a thrust upon the button 191, which is associated with the button 192 by a lever 190 pivoted at 197.

rllhe bar 102 is tree to be moved inwardly without the agency ot' the knobs and may be operated by movement ot the bolt 27 as the same? is re racted, li/leans to accomplish this may comprise a lever 201 pivoted at 202 and having' an end 203 disposed in a notch 204 in the end 103 of the latchba-r 102. An opposite end ot the lever is disposed in the path et a contact lug 205 integral with a cani plate 20G. rlhus when yhe bolt 27 in its retracted position the latch bar 102 which is operable inwardly independently ot the knobs, will be retract ed. ryllhe lug,` 205 is shown in dotted lines since the same may be dispensed with and a. cam plate similar to 205 may be mounted on the cover plate to actuate the latch through the acency et the key as will presently be descrioed. A shoe in the torni et a 'friction spring 207 may be provided to and retain the bolt in its retracted. position. A stop lug 2 8 being provided toliinit the movement et the bolt. ldlhen the contact lug 205 has actuated the lever 201 to retract the latch it dll, when the door is opened and the knob released, move by reason ot the spring d8 to its normal position ont ot eno'agement with the lever 201. rEhe latch will, therefore, be free to act to secure the door when the same is closed without the projection ot' the'bolt and the doormay be opened at will by a manipulation oiE the latch knobs or by the knob 87. For the purpose ot actuating the bolt by means of a key, the cam plate 206 is pro# vided with a boss 206 positioned to be enby the lever arm 180 et' the key barrel 127 2), the resultant action beingl the saine as 7" is turned.

when 'the knob o Actnatine the arm 130 in the opposite direction to engage boss 207 on the cani plate will project the bolt.

As hereinabove in itioned, 1 may employ other means to cooperate with the key for actuating` the bolt. Such means may comprise a super cover 211 having a thread ed aperture 212 to receive a key barrel (Fig. 20) and adapted to be secured to an annular ric ge 218 lintegral with cover plate as shown in Figs. 18 and 21. 11n arcuate slot 21a is provided in t-he super cover. A spindle or what may be termed a secondary stub sha't't (Fig. 21) is mounted in the cover and disposed centrally with respect to the ridge 213. The shaft 215 may project from 'the underside ot the cover and a secondary earn plate 210 may be rotatable therewith. A tension spring; 217 having' one end secured to the shaft 215 and the other end secured in a clamp integral with the cover. serves to normally hold the plate 210 in an operative position, but not power- Jjul enough to throw the bolt The cani slate 216 is provided with an extension 221 having` a pin 222 secured thereto and extending; through the arcuate slot 21st to be engaged by lever 228 movable with key plug` 22d ot a key barrel screwed into the aperture 212 'in the super cover 211. A movement et the key plug by means ot a key will eiiect a movement of the Cain plate 216 which in turn may ac.- tuate the lever 201 by reason ot a suitably disposed projection 220 upon the plate; the lever maybe provided with a iin 227 es;-

tending` in the path of movement of the projection as shown in Fig. l?.

From the above it vrill be evident that, by reason ot the secondary cover plate 2li, the hey will seve to cause an actuation ot' the bolt to retract the same or project it and to causa a retraction of the latch as Well. "When the door is opened, the bolt will remain retractet b v reL son ot the shoe 20T' and a. reverse n'iovement ot th secondar)v cam plate will be caused b v the spring 2l? 'when the lier is removed trom the bar` rel. rhe cam plate will return to its normal position vvith the projection i221 en- Q'fned ivitli the boss 221i on the bolt radius ar 1 i which permits projecting; the bolt when loc ting' saine, the latch bar being' then Vtree to aeain be operated to catch in the keeper of the jamb.

Aclthough l have describe and illustrat ot inventioi i deemed it desirable to e certain modifications i ii connection with the major invention, l reserve the right to cover the iject matter relating thereto and `which is not speciiically claimed in the pref;d ent implication, bv t rature applications. Although e, preterred embodiment. of in): invention has; been shown and described herein. it is obvious to those skilled in the art that modifications ma),Y be made therein ivithout departirg' n the spirit and scope C i lit) l as set iorth in the appended ot' the invention claims.

lVhat claimed is: l. A loci: comprising a casing', a pivotal bolt having a hub mounted on a` vrall ot' said casina', said hub having a recess, and

means engaging said recess to hold the bolt in operative position Within said e: sing.

2. Al loci; comprising` a casing, a pivotal bolt having' a hub mounted on a vvall ot said casing', rid hub iaving a recess. and a washer ene ging' said recess to hold the bolt in ope position .vithin said casrati y'e comprising a casing'. an are bolt. pivotaiiv mounted Within said casing, and i. cloch spring' to project said bolt.

lock comprisingv a casing, an arcuate bolt jpiivotallv mounted directlj7 on a ivall ot said casing, means removably seemed to said casino; and engaging said bolt to retain the saine in operative position, and means for operating said bolt.

A lock comprising a casing, an arcuate bolt pivotalrv mounted on a Wall of said said casing and adapted when placed under tension by rotation of said bolt in clocl-- vv'ise direction to project said bolt.

T. A. lock comprisii Q' a c: inn'. an 1 bolt havin@ a l hub pivotall)v mounted on said cas di ing, means tor projecti said bolt, and means mounted on said ci.. ng and enga ingr said hub to retain the boh'y in its projected position.

S. A lock coiuprisingl a cafeiz'jf. an are boit T5 movable in a uri-ed path, means to operaie said bolt, anc' a pivotal member to hold said bolt in a given position.

9. loehr comprising` a asino' lmvine .i pinraliti'v" ot vralls. an arczrr t lli l a hub pivotally disposed in z casing', means for projec" :i pivotal member ier one' said bolt to i `tain the san e sition. *55

if). loci; compricing a c:

:ite bolt haviimn a hub( an :anni i t'or retainiugg thty bolt hub within said ln'roove. a l r in .said hob. 5

means Ytor p .pe-:tino and means;

pivotr-.ltv mounted i' un und (nf id sbouidci o i'clzziii thc projected l 1l. Xi. loci; comprano' a usine', a lult l movable in a curved path audimonnted vvithin said casino', and a pluralitj.y ot springs tor projecting said bolt Jfrom said casing'.

i2, It loci; compris' g' a casing', a bolt ll" movable in a curved pathand mounted ivihin said casio I and a helical and a spiral spring' lor projecting; said bolt 'trom said casing.

13. ji. loch comprising a casinfr bolt M5 i'noval;=le in a curved path. mcans ,irojectingl' said bolt. a member tor holding;` said bolt projected. a lic'v cilinder mounted in said casino' and having' an arm to eni'apje the bolt to retract the same. said arm lm haviun a rounded corner to jms-s said nzcmj,

l said bolt prrdcitcf. .l

i n is moved eitlicr :'iocz.'\1'i;'c erclocltvvisc. .said arm also bein; il to engage said bolt to retract the n" l5. A loci: comprisine' a casing', a bolt mounted ivithii said caline andladaptcd to be projected therefrom, a latch normally Q projecting' trom said casing, and a key L" c vlinder screwed into said casing' and adapted to operate said l'olt. said lccv crlinder beine' locked in said ca ne bj.'Y a 'pluralitv ot screws engaging said i-:ej' e -.lindcr 11,0

olii-center.

16. The combination'iny a lock havingy a pivotal bolt. and means to actuatesaidbolt, of a latch, means to project` said latch, means to retract said latch, and means comprising a rocking member and` resilient means to return the-latch retracting means to initial position.v

17. A loclf`v comprising a bolt movable in a curved path, a latch,` commonmeans to actuate said bolt and latch, means to project said latch, means independent of said common means to'v retract said latch, and means, independent of the latch projecting means to return the latch. retractintgv means to initial position.

18. A lock comprising a casing, a: pivotal bolt mounted Within said casing and. adapted to be projectedtherefrom, a cylinder'. lock, a spindle detached from the cylinder lock for: retracting the bolt, and. a lenob having a spindle, adjustably con-` nectedL to said first-mentioned spindle.

19. A lock comprising a casing, a bolt movable ina curved path, a latch, a plurality ofk means to retract said latch, and means to. hold said retractive means inoperative` from one side of aldoor, and coo-perating means tov retract saidy bolt and latch.

20. A lock comprising a casing, a` bolt movable iny a curvedv path and mounted Within said casing` and adapted to be projected therefrom, a spindle to act-nate said bolt, a detachable spindle to actuate the lirst spindle, .an escutcheon, said 'detachable spindle being mounted on said eseuteheon..

21. A, lock comprising' ar casing, a bolt movable in afcurvedI path, means for aiecting the operationof said bolt, an escutcheon, and means.y carried by said escutcheon for holdinfr the bolt inoperative.

QQJ lock comprising,` a casing, a bolt Within said casing, means for effectingy the automatic operation of said bolt, kan escutcheon, and means carried by saidk escmbclieon.4 for holding the bolt in its projected position.

23. A. locltcomprising acasing, a pivotal bolt mounted Within saidlcasing and adaptedY to be projected therefrom, a spindle 'for rctracting the bolt, a knob having,` a spindle detachably connected to saidr first-mentioned spindle, and an escutcheo-n to .hold said knob spindle in position on a door- 24. A lockcomprising a casing, a bolt movable in acurved path,.means for automatically projectingsaid bolt and means disposed Wholly within the path described by said bolt tor holding the same .retracted and. for effecting the automatic release oit said bolt.l

25. A. lock comprising a casing, an arcuate bolt pivotallymounted on a Wall ot said casing, means engaging the bolt adjacent the pivotall point Jfor holding the same in its projected position, means engaging the bolt intermediate the pivotal point and the bolt proper for holding the bolt in its retracted position, means for automatically releasing` the last-mentioned means, said'releasing means being; disposed Within the arc described by saidl bolt.

26. A lock comprising a casing, an arcuate. bolt pivotally supported by said casing, and a combined releaser and bolt retaining` means Wholly disposed within the pathv described by said bolt.

27. A loclr` comprising; a casing, a bolt pivotally mounted in said'casingmeans yor automatically engaging said bolt when retracted to hold the same in such j iosition, said means being' disposed Within thearc described by said bolt, a releaser integral with saidmeans and adapted to engage an external member to disengage said means from said bolt, said releaser also being disposed within the path described by said bolt, and a spring Within an opening in releaser and having one end engaging. the releaser and the other end engaging a portion ot' said casing, said spring norniallj,7

maintaining the releaser in operative posi tion and to effect the engagement ot' said, inst-mentioned means with the bolt to hold the same in its retracted position.

28. A lock comprising` a casing, aY bolt pivotally mounted Within saidl casing, an arcuate-shaped releaser slidably mounted within said casing, one end oit said releaser being adapted to normally project from. sai-:l casing and the other end beingA disposed Within said casing and adapted to eng said bolt to hold the same in its retracted positionsaid releaser being positioned within the arc described by said bolt, andi means 'fior projecting said bolt.

29. A lock comprising a casing,

pivotally mounted Within said casing; and having a tongue adapted to be projected from said casing` in an arcuate path, means for projecting said bolt, means for holding said bolt in its projected position, means tor holding` said bolt in its retracted position, means for eiiecting the release automatically of said last-mentioned means, all oit said means being disposedk within the arc described'by said bolt. i

30. A lool; comprising a casing, a bolt p-ivotally mounted within said casing, means ior retracting-said bolt, means jor holding; said bolt .in its retracted position, means 'for holding` said. bolt in. its projected position, means for elifecting the disengagement ot the means iior holding the bolt in its position, a key cylinder for retractino' the bolt, means for rendering said means for effecting the disengagement ot' the retracted means ineffective, all of said meals being dispose-d Within the path ot movement of said bolt.

31. A lool; comprising,` a casing, a bolt pivotally mounted within said casing, ine-ans:

a bolt retracted coaXially arranged with, the pivotal point of said bolt for retracting said bolt, said means being operated by a knob, a key cylinder having a` movable plug eccentrically arranged with respect to the pivot-al point of said bolt to effect the retraction ot said bolt, and means disposed Within the path of movement of said bolt tor locking the same in its retracted position, in its projected position, and to release the means 'for holding the bolt in its retracted position.

32. A lock comprising a casing, a radius arm pivotally mounted Within said casing, a bolt carried by said arm, means for projecting said bolt, means for ret-racting said bolt, means for holding t-he bolt retracted, and a plurality ot' means on said radius arm for cooperating with the means t'or holding the bolt retracted.

33. l lock comprising a casing, a radius arm pivotally mounted Within said easing, a bolt carried by said arm, means for automatically projecting said bolt, means for holding' the bolt in retracted position, a releaser for disengaging said last-mentioned means from said bolt to permit the automatic projection thereof, said releaser having an oliset to permit the passage ot said radius arm.

34. A lock comprising a casing, a bolt mounted to move in a curved path, and a key cylinder having a plug to actuate the bolt, said plug having a key slot at an oli' angle to the perpendicular.

35. A lock comprising a casing, a bolt pivotally mounted Within said casing, means for holding said bolt retracted, means for automatically releasing said bolt, mea-ns for project-ing said bolt, means for retracting said bolt, and means for retracting the releaser upon retraction of said bolt.

36. A lock of the arcuate bolt type, an arcuate bolt, means for retracting the bolt, means to hold said bolt retracted and means for releasing the bolt, said inst-mentioned means cooperating With said releasing means to effect the retraction thereof.

37. The combination ot' a guard having three spaced-apart openings to receive an arcuate bolt and a. latch, with a lock having an arcuate bolt to engage two ot said openings and a latch to engage one of said openings, the openings for said bolt having different clearances on the side adjacent the inner side of the door to which the lock is attached than the clearance betneen the guard opening' and the latch, ivherebj,Y the projection ot' the bolt through the guard openings Without friction is assured.

3S. A lock comprising a casing, a bolt movable in a curved path, means iior retracting said bolt, a latch disposed Within said casing and outside of the path of movement of said bolt, said bolt cooperating with means to retract the latch during retraction of said bolt by said means, and independent means for retracting said latch.

39. A lock comprising a casing, a bolt movable in a curved path, a latch within said casing and disposed outside ot the path of movement ot' said bolt, and means cooperating ivith said bolt and latch to cause the retraction of said latch upon retraction oi said bolt.

0. A lock comprising a casing, a bolt movable in a curved path, a latch within said casing and normally projecting thereirom, said latch being disposed outside of the path of movement oft' said bolt, said bolt cooperating with said latch to retract the same upon retraction ot said bolt.

stl. A lock comprising a casing, a door to which said lock is secured, a knob having a spindle supported by said door, one end of said spindle projecting Within said easing and adapted to operate a bolt Within .said casing and movable Ain a curved path.

A lock comprising a casing, a door toV which said lock is secured, a bolt Within said casing and movable in a curved path, an escutcheon plate secured, to the door, a knob having a spindle rotatabljY mounted on said plate, said spindle having an end extending ivithin said casing to actuate said bolt.

43. The combination With a lock having a bolt movable in a curved path and a latch, of a. closed guard having openings i'or the passage ot said bolt and said latch, the opening for said latch being outside of the path of movement of said bolt.

fi-i. The combination With a lock having an arcuate bolt and a latch, of a closed guard having three spaced-apart openings, said bolt being adapted to engage tivo of said openings and said latch engaging the remaining opening, the latch opening being outside of the path ol movement ol' said bolt.

d5. A lock comprising a casing, a guard, a bolt adapted to interlock with .said guard, a latch engaging said guard, and a keyY cylinder lock secured to said casing and projecting therein and adapted to actuatc both the bolt and the latch. i

4.6. A lock comprising a casing, a guard. a bolt adapted to interlock with said guard. a latch disposed outside ol the path ot' movement of said bolt and adapted to engage the guard, and common means adapted to actuate both the bolt and latch.

A7. A lock comprising a easing, a guard` a bolt interlocking with said guard, a latch engaging said guard, and actuating means cooperating With lever means to operate both the bolt and latch. and said lever means. said lever means being normally detached from the actuating means.

48. A lock comprising a casing, an automatic bolt, an automatic latch, and a single knob to operate said bolt and said latch.

49. A lock comprising a casing, a bolt adapted to be automatically projected from said casing, means for causing the automatic projection of said bolt upon the closing of a door carrying said lock, a latch, means for automatically projecting said lat-ch, and a single knob lfor operating said bolt and latch.

50, A lock comprising a casing, an automatic bolt, an automatic latch, and a key cylinder for operating said bolt and latch.

5l. A lock comprising a casing, an are bolt mounted Within said casing, a latch disposed Within said casing and outside ot the path of movement described by said bolt, and a single operating knob for both said bolt and latch.

52. A lock comprising a casing, a bolt mounted Within said casing and movable in a curved rath, a latch disposed Within said casing and outside of the path of movement described by said bolt, and a single means for operating said bolt and latch.

53. A lock comprising a casing, a bolt pivotally mounted Within said casing, a latch disposed Within said casing and outside of the path of movement described by said bolt, and a single operating knob for both said bolt and latch.

5a. A lock comprising a casing, an arc bolt mounted Within said casing, a latch disposed Within said casing and outside ot' the path of `movement described by said bolt, and a cylinder lock to operate both said bolt and latch.

55. A lock comprising a. casing, a bolt pivot-ally mounted Within said casing, a latch disposed Within said casing and outside of the path of movement described by said bolt, and a cylinder lock to operate both said bolt and latch.

56. The combination ot' a casing, an arcuate bolt within said casing and When retracted having its ends slightly projecting beyond the tace of said casing, and a removable cover face plate for said casing having openings therein for receiving the ends of said bolt, said openings having the.l outer edges beveled with respect to the longitudinal anis ct the plate and the inner edges at right angles to the longitudinal axis, whereby insertion ot the projecting' ends olf the bolt through said openings is facilitated.

5T. The combination of a casing having two spaced-apart openings in its face, a bolt mounted within said casing and When in retracted position having its ends slightly spindle projecting movable tace plate for said casing having spaced-apart openings of such design as to permit the ready application of the tace plate over the projecting ends of said bolt.

58. A lock comprising a casing, a boltv adapted to be projected Irom said casing, a knob spindle for reti-acting said bolt, a catch for holding said bolt in its projected position, and a chamtered edge on said catch and cooperating With said knob spin die to automatically return the catch to operative position upon projection of the bolt.

59. A lock comprising a casing, a bolt movable in a curved path and mounted Within said casing, and plural means for automatically projecting said bolt.

60. A lock comprising a casing, a bolt movable in a curved path, a latch, a. plurality of means, to retract said latch, and means on one side of a door directly cooperating With said latch retracting means to hold said retractive means inoperative.

6l. A lock comprising a casing, a bolt movable in a curved path, a latch, a plurality of means to retract said latch, and means directly co-operating with said latch retracting means to hold said retractive means inoperative from one side ot a door.

62. A lock comprising a casing, a bolt movable in a curved path, a latch, and a simple lever or irst class lever to actuate said latch.

63. A lock comprising a casing, a pivotal bolt, an actuating spindle, a latch, and a first class lever means disposed between said spindle and latch to actuate the latter.

64. A lock comprising a casing, a bolt movable in a curved path, a spindle to actuate said bolt and key operated means to actuate said spindle, said key operated means being normally detached from said spindle.

65. A lock comprising a casing, a bolt movable in a curved path, a bolt actuating mounted in one wall only of said casing, and a key cylinder to operate said bolt actuating spindle.

66. A lock comprising a casing, an arcuate bolt supported Within said casing, a spindle concentrically mounted with respect to said bolt, and a cylinder lock concentrically mountedl with respect to said bolt and having a key plug eccentrically mounted With respect to said bolt and coacting therewith to retract the same.

In testimony whereof, I have hereunto subscribed my name this 15 day of October, 1924.

@LIVE lV. LANPHERE.

beyond said openings, and a rel DISCLAHVH'z-.RD

1,584,950.-Clz'we W. Law/phare, New York, N. Y. CURVED BOLT Loon. Patent dated May 18, 1926. Disclaimer filed October 5, 1927, by the patentee.

Hereby enters this disclaimer to those claims in said specilication which are in the following Words, to wit:

. 7. A lock comprising a casing, an arc bolt having a hub pivotally mount-ed on said casing, means for projecting said bolt, and means mounted on said casing and engaging said hub to retain the bolt in its projected position. l

A lock comprising a -Casing, an arc bolt movable in a curved path, means to operate said bolt, and a pivotal member to hold said bolt in a given position.

26. A lock comprising a casing, an arcuate bolt pivotally supported by said casing, and a combined releaser and bolt retaining means Wholly disposed within the path described by said bolt.

52A lock comprising a casing, a bolt mounted within said casing and movable in a curved path, a latch disposed Within said casing and outside of the path of movement described by said bolt, and a single means for operating said bolt and latch.

[Oyo'ial Gazette OctobwI 25, 19527.] 

